/*
 * Copyright 2010 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.internal.resource;

public class CachingResource extends DelegatingResource {
    private String content;
    private boolean fetched;

    public CachingResource(Resource resource) {
        super(resource);
    }

    @Override
    public boolean getExists() {
        maybeFetch();
        return content != null;
    }

    @Override
    public String getText() {
        maybeFetch();
        return content;
    }

    private void maybeFetch() {
        if (!fetched) {
            content = getResource().getText();
            fetched = true;
        }
    }
}
